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ReferencesBuchino JJ. Buchino JJ. Malignant mixed Muellerian tumor of the Fallopian Tube. Arch. Puthol. Lab. Med. 1987: 1 1 1: 386-387. Hanjani P, Petersen RO. Bonnell SA. Malignant mixed Mullerian tumor of the Fallopian tube. Report of a case and review of the literature. Gynecol. Oncol. 1980: 9: 381-393. Williams TJ, Woodruff JD. Malignant mixed mesenchymal turnours of the uterine tube. Obstet. Gunecol. 1963: 21: 618-621. Wu JP, Tanner WS, Fardal PM. Malignant mixed Muellerian tumor of the uterine tube. Obstet. Gynecol. 1973; 41: 707-712. Yabushita H. Ogawa A, Hoshina S. Okamoto T. Nakanishi M. Ishihara M. Malignant mixed mesodermal tumour of the fallopian tube. Case

The mediastinum is seldomly involved by granulocytic sarcoma and superior vena cava (SVC) obstruction is an even rarer presentation. Some radiologists advocate to treat SVC obstruction as a semimedical emergency regardless of the underlying pathology. This policy has been criticized. We describe a patient with severe SVC obstruction preceding the development of frank acute myeloblastic leukemia and granulocytic sarcoma in breasts. Review of the literature yields 11 patients with prominent mediastinal granulocytic sarcoma complicating myeloid leukemia; 3 of them presented with superior vena cava syndrome.